.upload-dialog {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    width: 300px;
    height: 250px;
    background-color: white;
    border: 1px solid #ccc;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow-x: hidden;
    overflow-y: hidden;
    padding-top: 1em;
    padding-bottom: 1em;
    padding-left: 2em;
}
.upload-dialog-content {
    position: fixed;
    background-color: white;
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    top: 50%;
    left: 50%;
    width: 300px;
    transform: translate(-50%, -50%);
}
.upload-dialog-cancel {
    background-color: #ccc;
    margin: 0 25px;
    padding: 8px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 15px;
}
.upload-dialog-ok {
    background-color: #4fb558;
    color: white;
    margin: 0 25px;
    padding: 8px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 15px;
}
.upload-dialog-cancel:hover, .upload-dialog-ok:hover {
    transition: transform 0.3s ease;
    transform: scale(1.2);
}
.drop-zone {
    width: 98%;
    height: 120px;
    border: 2px dashed #ccc;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px 0;
    transition: all 0.3s ease;
    overflow: hidden;
}
.drop-zone.dragover {
    background-color: #f0f8ff;
    border-color: #4fb558;
}
.drop-zone-content {
    text-align: center;
    width: 100%;
    padding: 0 20px;
}
.drop-zone-content img {
    width: 48px;
    height: 48px;
    margin-bottom: 15px;
}
.drop-zone-upload-button {
    width: 290px;
    height: 120px;
    padding-top: 20px;
    background-color: white;
    color: black;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
}
.drop-zone-upload-button:hover {
    background-color: #ccc;
}
.drop-zone-upload-button span {
    display: block;
    width: 100%;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
}